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https://www.readbyqxmd.com/read/28732232/periodicity-and-stability-for-variable-time-impulsive-neural-networks
#1
Hongfei Li, Chuandong Li, Tingwen Huang
The paper considers a general neural networks model with variable-time impulses. It is shown that each solution of the system intersects with every discontinuous surface exactly once via several new well-proposed assumptions. Moreover, based on the comparison principle, this paper shows that neural networks with variable-time impulse can be reduced to the corresponding neural network with fixed-time impulses under well-selected conditions. Meanwhile, the fixed-time impulsive systems can be regarded as the comparison system of the variable-time impulsive neural networks...
June 29, 2017: Neural Networks: the Official Journal of the International Neural Network Society
https://www.readbyqxmd.com/read/28708535/comparison-of-estrus-synchronization-by-controlled-internal-drug-release-device-cidr-and-adhesive-transdermal-progestin-patch-in-postpartum-beef-cows
#2
Jatuporn Kajaysri, Chaiwat Chumchoung, Supphathat Wutthiwitthayaphong, Wanvipa Suthikrai, Praphai Sangkamanee
Estrous synchronization with progesterone based protocols has been essentially used in cattle industry. Although intravaginal devices have been commonly used, this technique may induce vaginitis. This study aimed at examining the efficiency of novel transdermal progestin patch on follicle development and comparing the progestin patch versus CIDR device on estrous synchronization, complication at treated site and pregnancy in beef cattle. In experiment 1, seven beef cows were treated with an adhesive transdermal progestin patch on the ventral surface of the proximal part of the tail for 7 days...
June 6, 2017: Theriogenology
https://www.readbyqxmd.com/read/28708499/split-time-artificial-insemination-in-beef-cattle-iii-comparing-fixed-time-artificial-insemination-to-split-time-artificial-insemination-with-delayed-administration-of-gnrh-in-postpartum-cows
#3
B E Bishop, J M Thomas, J M Abel, S E Poock, M R Ellersieck, M F Smith, D J Patterson
This experiment was designed to compare pregnancy rates in postpartum beef cows following split-time (STAI) or fixed-time (FTAI) artificial insemination. Estrus was synchronized for 671 cows at seven locations following administration of the 7-d CO-Synch + CIDR protocol (100 μg GnRH + CIDR insert [1.38 g progesterone] on d 0; 25 mg prostaglandin F2α [PG] at CIDR removal on d 7). Cows were assigned to treatments that were balanced across locations based on age, body condition score, and days postpartum at the time treatments were initiated...
April 29, 2017: Theriogenology
https://www.readbyqxmd.com/read/28705484/is-it-all-about-the-money-not-all-surgical-subspecialization-leads-to-higher-lifetime-revenue-when-compared-to-general-surgery
#4
Maria Baimas-George, Brian Fleischer, Douglas Slakey, Emad Kandil, James R Korndorffer, Christopher DuCoin
OBJECTIVE: It is believed that spending additional years gaining expertise in surgical subspecialization leads to higher lifetime revenue. Literature shows that more surgeons are pursuing fellowship training and dedicated research years; however, there are no data looking at the aggregate economic impact when training time is accounted for. It is hypothesized that there will be a discrepancy in lifetime income when delay to practice is considered. DESIGN: Data were collected from the Medical Group Management Association's 2015 report of average annual salaries...
July 10, 2017: Journal of Surgical Education
https://www.readbyqxmd.com/read/28700688/four-simple-rules-that-are-sufficient-to-generate-the-mammalian-blastocyst
#5
Silas Boye Nissen, Marta Perera, Javier Martin Gonzalez, Sophie M Morgani, Mogens H Jensen, Kim Sneppen, Joshua M Brickman, Ala Trusina
Early mammalian development is both highly regulative and self-organizing. It involves the interplay of cell position, predetermined gene regulatory networks, and environmental interactions to generate the physical arrangement of the blastocyst with precise timing. However, this process occurs in the absence of maternal information and in the presence of transcriptional stochasticity. How does the preimplantation embryo ensure robust, reproducible development in this context? It utilizes a versatile toolbox that includes complex intracellular networks coupled to cell-cell communication, segregation by differential adhesion, and apoptosis...
July 2017: PLoS Biology
https://www.readbyqxmd.com/read/28691954/maintenance-belatacept-based-immunosuppression-in-lung-transplantation-recipients-who-failed-calcineurin-inhibitors
#6
Carlo J Iasella, Ryan J Winstead, Cody A Moore, Bruce A Johnson, Ayelet T Feinberg, Matthew R Morrell, J W Awori Hayanga, Elizabeth A Lendermon, Adriana Zeevi, John F McDyer, Christopher R Ensor
BACKGROUND: Traditional immunosuppressive regimens (ISR) used in lung transplantation rely on calcineurin inhibitors (CNI) that occasionally cause severe adverse reactions necessitating discontinuation. Belatacept is a novel costimulation antagonist approved for use in renal transplantation which lacks data in lung transplantation. This series aims to describe the response to belatacept ISR in 11 lung transplantation recipients after CNI failure. METHODS: Single center, retrospective medical record review of adult lung transplant recipients (LTR) before and after conversion to belatacept-based ISR...
July 6, 2017: Transplantation
https://www.readbyqxmd.com/read/28691349/ovsynch-plus-protocol-improves-ovarian-response-in-anovular-murrah-buffaloes-in-low-breeding-season
#7
R K Sharma, S K Phulia, A Jerome, I Singh
The objective of the study was to evaluate the efficacy of ovarian response and pregnancy rate in anovular buffaloes following Ovsynch and Ovsynch Plus protocols. Buffaloes (n = 55) were divided into two groups: Ovsynch group (n = 26): GnRH (10 μg, GnRH1) on Day 0, PGF2 α (25 mg) on Day 7, GnRH (10 μg, GnRH2) on Day 9; Ovsynch Plus group (n = 29): 500 IU equine chorionic gonadotropin (eCG) 72 hr (day -3) prior to Ovsynch protocol, followed by fixed timed artificial insemination (FTAI) 6 and 24 hr after GnRH2 injection in bot groups...
July 9, 2017: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/28676081/gender-differences-in-physical-activity-motivators-and-context-preferences-a-population-based-study-in-people-in-their-sixties
#8
Jannique G Z van Uffelen, Asaduzzaman Khan, Nicola W Burton
BACKGROUND: Although regular participation in physical activity (PA) has health benefits across the life span, the proportion of people doing sufficient activity for these benefits decreases with age. The aim of this study was to identify motivating factors and context preferences for PA in people in their sixties, and to examine gender differences in these factors. METHODS: Data were used from people aged 60-67 years who responded to a mail survey in Brisbane, Australia, in 2009...
July 4, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28669538/the-effect-of-methylphenidate-on-the-microstructure-of-schedule-induced-polydipsia-in-an-animal-model-of-adhd
#9
Javier Íbias, Carter W Daniels, Miguel Miguéns, Ricardo Pellón, Federico Sanabria
Schedule-induced polydipsia (SIP) was established in spontaneously hypertensive rats (SHR), Wistar Kyoto rats (WKY), and Wistar rats, using a multiple fixed-time (FT) schedule of food delivery, with 30- and 90-s components. Thereafter, animals were exposed to methylphenidate (MPH; 2.5mg/kg/d) for six consecutive SIP sessions. A test to assess possible sensitization effects was also conducted four days after termination of the drug treatment. At baseline, FT 90-s produced longer and more frequent drinking episodes in SHR than in WKY...
June 30, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28669062/comparative-efficacy-of-oestrus-synchronization-protocols-in-buffalo-bubalus-bubalis
#10
R Rathore, R K Sharma, S K Phulia, V Mudgal, A Jerome, S P S Ghuman, I Singh
This study was conducted to test the efficacy of gonadotropic hormone (GnRH)-based synchronization protocols (Ovsynch, Heatsynch, and Ovsynch Plus) in buffaloes under field condition. Based on anamnesis and transrectal palpation twice at 10-day interval and serum progesterone (P4) concentration, 150 anoestrous buffaloes and delayed pubertal heifers were selected to induce oestrus using GnRH-based protocols. These selected animals were randomly divided into three groups: group I: Ovsynch (n = 50), group II: Heatsynch (n = 50), and group III: Ovsynch Plus (n = 50) regimen...
July 1, 2017: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/28668533/resynchronization-of-ovulation-protocols-for-dairy-cows-including-or-not-including-gonadotropin-releasing-hormone-to-induce-a-new-follicular-wave-effects-on-re-insemination-pattern-ovarian-responses-and-pregnancy-outcomes
#11
R Wijma, M L Stangaferro, M Masello, G E Granados, J O Giordano
Our objectives were to evaluate the pattern of re-insemination, ovarian responses, and pregnancy per artificial insemination (P/AI) of cows submitted to different resynchronization of ovulation protocols. The base protocol started at 25 ± 3 d after artificial insemination (AI) and was as follows: GnRH, 7 and 8 d later PGF2α, GnRH 32 h after second PGF2α, and fixed timed AI (TAI) 16 to 18 h after GnRH. At 18 ± 3 d after AI, cows were randomly assigned to the G25 (n = 1,100) or NoG25 (n = 1,098) treatments...
June 28, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28646762/hybrid-impulsive-and-switching-hopfield-neural-networks-with-state-dependent-impulses
#12
Xianxiu Zhang, Chuandong Li, Tingwen Huang
We discuss the global stability of switching Hopfield neural networks (HNN) with state-dependent impulses using B-equivalence method. Under certain conditions, we show that the state-dependent impulsive switching systems can be reduced to the fixed-time ones, and that the global stability of corresponding comparison system implies the same stability of the considered system. On this basis, a novel stability criterion for the considered HNN is established. Finally, two numerical examples are given to demonstrate the effectiveness of our results...
May 24, 2017: Neural Networks: the Official Journal of the International Neural Network Society
https://www.readbyqxmd.com/read/28635497/desynchronisation-of-auditory-steady-state-responses-related-to-changes-in-interaural-phase-differences-an-objective-measure-of-binaural-hearing
#13
Charlotte Vercammen, Astrid van Wieringen, Jan Wouters, Tom Francart
OBJECTIVE: Binaural processing can be measured objectively as a desynchronisation of phase-locked neural activity to changes in interaural phase differences (IPDs). This was reported in a magnetoencephalography study for 40 Hz amplitude modulated tones. The goal of this study was to measure this desynchronisation using electroencephalography and explore the outcomes for different modulation frequencies. DESIGN: Auditory steady-state responses (ASSRs) were recorded to pure tones, amplitude modulated at 20, 40 or 80 Hz...
February 14, 2017: International Journal of Audiology
https://www.readbyqxmd.com/read/28626013/sleep-disrupts-high-level-speech-parsing-despite-significant-basic-auditory-processing
#14
Shiri Makov, Omer Sharon, Nai Ding, Michal Ben-Shachar, Yuval Nir, Elana Zion Golumbic
The extent to which the sleeping brain processes sensory information remains unclear. This is particularly true for continuous and complex stimuli, such as speech, in which information is organized into hierarchically embedded structures. Recently, novel metrics for assessing the neural representation of continuous speech have been developed, using non-invasive brain recordings. Those were so far tested during wakefulness. Here we investigated, for the first time, the sleeping brain's capacity to process continuous speech at different hierarchical levels, using a newly developed Concurrent Hierarchical Tracking (CHT) approach that can online monitor the neural representation and processing-depth of continuous speech...
June 16, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28613191/collective-behaviors-of-mobile-robots-beyond-the-nearest-neighbor-rules-with-switching-topology
#15
Boda Ning, Qing-Long Han, Zongyu Zuo, Jiong Jin, Jinchuan Zheng
This paper is concerned with the collective behaviors of robots beyond the nearest neighbor rules, i.e., dispersion and flocking, when robots interact with others by applying an acute angle test (AAT)-based interaction rule. Different from a conventional nearest neighbor rule or its variations, the AAT-based interaction rule allows interactions with some far-neighbors and excludes unnecessary nearest neighbors. The resulting dispersion and flocking hold the advantages of scalability, connectivity, robustness, and effective area coverage...
June 8, 2017: IEEE Transactions on Cybernetics
https://www.readbyqxmd.com/read/28611282/the-4-plus-2-rituximab-protocol-makes-maintenance-treatment-unneeded-in-patients-with-refractory-anca-associated-vasculitis-a-10-year-observation-study
#16
Dario Roccatello, Savino Sciascia, Daniela Rossi, Mirella Alpa, Carla Naretto, Massimo Radin, Roberta Fenoglio, Simone Baldovino, Elisa Menegatti
BACKGROUND: ANCA associated vasculitides (AAV) often present with a chronic relapsing course. Relapse leads to increased immunosuppressive exposure and consequent toxicity. While two randomized controlled trials have shown rituximab (RTX) to be the most effective induction treatment in patients with relapsing disease, the optimal treatment duration and RTX dose remain debated. Whether to administer a maintenance dose to every patient, at a fixed time interval or on the basis of B cell count and ANCA titre or only when disease manifestations do occur is still debated as well...
May 23, 2017: Oncotarget
https://www.readbyqxmd.com/read/28601153/equine-chorionic-gonadotropin-increases-fertility-of-grazing-dairy-cows-that-receive-fixed-time-artificial-insemination-in-the-early-but-not-later-postpartum-period
#17
Alexandre B Prata, Guilherme C S Pontes, Pedro Leopoldo J Monteiro, Jéssica N Drum, Milo C Wiltbank, Roberto Sartori
This study evaluated effects of equine chorionic gonadotropin (eCG) on fertility of 679 crossbred (Bos taurus x Bos indicus) lactating grazing cows synchronized for fixed-time AI (FTAI). At a random day of the estrous cycle cows received an intravaginal progesterone (P4) implant, 2 mg estradiol benzoate (EB) and 100 μg gonadorelin (D0-AM). On D7-AM, cows received 0.5 mg sodium cloprostenol and were randomly assigned into two treatments: eCG (n = 340; 400 IU eCG on D7), or Control (n = 339; no eCG). On D8-PM, P4 implants were removed and cows received 0...
August 2017: Theriogenology
https://www.readbyqxmd.com/read/28591613/analysis-of-noise-mechanisms-in-cell-size-control
#18
Saurabh Modi, Cesar Augusto Vargas-Garcia, Khem Raj Ghusinga, Abhyudai Singh
At the single-cell level, noise arises from multiple sources, such as inherent stochasticity of biomolecular processes, random partitioning of resources at division, and fluctuations in cellular growth rates. How these diverse noise mechanisms combine to drive variations in cell size within an isoclonal population is not well understood. Here, we investigate the contributions of different noise sources in well-known paradigms of cell-size control, such as adder (division occurs after adding a fixed size from birth), sizer (division occurs after reaching a size threshold), and timer (division occurs after a fixed time from birth)...
June 6, 2017: Biophysical Journal
https://www.readbyqxmd.com/read/28588078/walking-as-a-window-to-risk-and-resiliency
#19
Karen P Alexander
Walking is fundamental to preserving health and independence. An individual's usual pace of walking is also recognized as an indicator of health, risk for dependency, and a predictor of long-term survival. Reducing gait speed by just 0.1m/sec provides important information about outcomes in older adults that goes beyond chronologic age, sex, comorbidity, and self-reported function combined. This small reduction in gate speed is significant because each individual sets the pace necessary to accommodate a host of integrated functions that allow him or her to walk...
June 6, 2017: Circulation
https://www.readbyqxmd.com/read/28583595/the-copper-transporter-slc31a1-ctr1-is-expressed-in-bovine-spermatozoa-and-oocytes-copper-in-ivf-medium-improves-sperm-quality
#20
J P Anchordoquy, J M Anchordoquy, A M Pascua, N Nikoloff, P Peral-García, C C Furnus
Adequate dietary intake of copper (Cu) is required for normal reproductive performance in cattle. The objective of this study was to investigate the pregnancy rates from cattle with deficient, marginal and adequate Cu plasma concentration at the beginning of artificial insemination protocol. Moreover, we determined Cu concentrations present in bovine oviductal fluid (OF), and the effects of Cu on fertilizing ability of bovine spermatozoa. Also, the presence of Cu transporter, SLC31A1 (also known as CTR1), in spermatozoa and in vitro matured oocyte were investigated...
July 15, 2017: Theriogenology
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